asp.net去除字符串中html标签

     ///   <summary>
    ///   去除HTML标记
    ///   </summary>
    ///   <param   name="NoHTML">包括HTML的源码</param>
    ///   <returns>已经去除后的文字</returns>   
    public static string RemoveHTMLCode(string HtmlCode)
    {
        //删除脚本  
        HtmlCode = Regex.Replace(HtmlCode, @"<script[^>]*?>.*?</script>", "", RegexOptions.IgnoreCase);
        //删除HTML  
        HtmlCode = Regex.Replace(HtmlCode, @"<(.[^>]*)>", "", RegexOptions.IgnoreCase);
        HtmlCode = Regex.Replace(HtmlCode, @"([\r\n])[\s]+", "", RegexOptions.IgnoreCase);
        HtmlCode = Regex.Replace(HtmlCode, @"-->", "", RegexOptions.IgnoreCase);
        HtmlCode = Regex.Replace(HtmlCode, @"<!--.*", "", RegexOptions.IgnoreCase);
        HtmlCode = Regex.Replace(HtmlCode, @"&(quot|#34);", "\"", RegexOptions.IgnoreCase);
        HtmlCode = Regex.Replace(HtmlCode, @"&(amp|#38);", "&", RegexOptions.IgnoreCase);
        HtmlCode = Regex.Replace(HtmlCode, @"&(lt|#60);", "<", RegexOptions.IgnoreCase);
        HtmlCode = Regex.Replace(HtmlCode, @"&(gt|#62);", ">", RegexOptions.IgnoreCase);
        HtmlCode = Regex.Replace(HtmlCode, @"&(nbsp|#160);", "   ", RegexOptions.IgnoreCase);
        HtmlCode = Regex.Replace(HtmlCode, @"&(iexcl|#161);", "\xa1", RegexOptions.IgnoreCase);
        HtmlCode = Regex.Replace(HtmlCode, @"&(cent|#162);", "\xa2", RegexOptions.IgnoreCase);
        HtmlCode = Regex.Replace(HtmlCode, @"&(pound|#163);", "\xa3", RegexOptions.IgnoreCase);
        HtmlCode = Regex.Replace(HtmlCode, @"&(copy|#169);", "\xa9", RegexOptions.IgnoreCase);
        HtmlCode = Regex.Replace(HtmlCode, @"&#(\d+);", "", RegexOptions.IgnoreCase);
        HtmlCode.Replace("<", "");
        HtmlCode.Replace(">", "");
        HtmlCode.Replace("\r\n", "");
        HtmlCode = HttpContext.Current.Server.HtmlEncode(HtmlCode).Trim();
        return HtmlCode;
    }